It is a four layer device made of PNPN or NPNP materials. it basically consists of three diodes connected back to back with the gate connection used to switch current ON and OFF.
Applications:
a.inverters.
b.relays.
c.phase control.
d.regulated power supplies.
e.heater controls.
f.battery chargers.
Malumu answered the question on October 21, 2018 at 18:56
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